TW201132093A - Data transmission with cross-subframe control in a wireless network - Google Patents

Abstract

Techniques for supporting communication in dominant interference scenarios are described. In an aspect, communication in a dominant interference scenario may be supported with cross-subframe control. Different base stations may be allocated different subframes for sending control information. Each base station may send control messages in the subframes allocated to that base station. Different base stations may have different timelines for sending control messages due to their different allocated subframes. With cross-subframe control, control information (e.g., grants, acknowledgement, etc.) may be sent in a first subframe and may be applicable for data transmission in a second subframe, which may be a variable number of subframes from the first subframe. In another aspect, messages to mitigate interference may be sent on a physical downlink control channel (PDCCH).

Description

201132093 t, Invention: This patent application claims US Patent Application No. 61/184,218 entitled "SYSTEMS AND METHODS OF SUPPORTING RESTRICTED ASSOCIATION/RANGE EXTENSION IN HETEROGENEOUS NETWORKS VIA CROSS SUBFRAME CONTROL" and titled "TRANSMITTING RESOURCE UTILIZATION MESSAGES" Priority of US Provisional Application No. 61/184,224 to ON THE PHYSICAL DOWNLINK CONTROL CHANNEL, both of which were filed on June 4, 2009, assigned to their assignee, and cited The manner is incorporated herein. TECHNICAL FIELD OF THE INVENTION The present invention relates generally to communications, and more particularly to techniques for supporting data transmission in a wireless communication network. [Prior Art] Wireless communication networks are widely deployed to provide various communication contents such as voice, video, packet data, messaging, and broadcasting. These wireless networks can be multiplexed access networks that can support multiple users by sharing available network resources. Examples of such multiplexed access networks include code division multiplex access (CDMA) networks, time division multiplex access (TDMA) networks, frequency division multiplex access (FDMA) networks, and orthogonality. FDMA (OFDMA) network and single carrier FDMA (SC-FDMA) network. The wireless communication network can include a number of base stations that can support the communication of the 201132093 Dry User Equipment (UEs) and can communicate with the base station via the downlink and uplink. The downlink key (or forward link) represents the communication link from the base station to the UE, and the upper (four) way (μ represents the communication link from the UE to the base station. The base station can be on the downlink to one or more The UE transmits the data and can receive data from one or more UEs on the uplink. On the next (four) road, the data transmission from the base station may observe interference due to data transmission from the adjacent base station. On the road, data transmission from each of the elevations may observe interference due to other data transmissions from communication with neighboring base stations. For both downlink and uplink routes, 5 due to interfering base stations Interference with interfering UEs may degrade performance. SUMMARY OF THE INVENTION [0001] This document describes techniques for supporting communications in a dominant interference scenario. The dominant interference scenario is a scenario in which the UE or base station observes interference. This high interference may severely degrade the data transmission performance. In the I case, the cross-frame control can be used to support the wanted in the dominant channel. It can be assigned to different base stations. Different sub-frames transmit control information. Each base station can send control messages in the subframes assigned to the base station. Due to different subframes allocated to different base stations, different base stations can be used for different base stations. Send different isochrones of control messages. Use cross-frame control 'control information (eg, license, confirmation, etc.) can be sent in the first subframe, and can be applied to the data in the second subframe 201132093 The transmission 'the second sub-frame can be a variable number of sub-frames from the first sub-frame. In the 5th and 10th, the control information can be exchanged (eg, sent or received) in the first sub-frame. The control information exchanged in the first call frame may be exchanged in the second subframe. The second subframe may be a variable number of subframes from the first subframe. The third subframe may be in the third subframe. Exchanging the acknowledgement for the data exchanged in the second subframe. The third subframe may also be a variable number of subframes from the second subframe. In another aspect, the physical downlink control channel may be used. Sending on (pdcch) To mitigate interference. In one design, the base station may send a message on the PDCCH to request reduced interference. Thereafter, the base station may exchange (e.g., transmit or receive) data on the resource due to transmission on the PDCCH. The message has reduced interference. In one design, the UE can monitor the message, which is sent by at least one base station on pDccH to request reduced interference. The UE can exchange data on resources, which are attributed to the message. The information transmitted by the at least one base station on the PDCCH has reduced interference. Various aspects and features of the present disclosure are described in further detail below. [Embodiment] The techniques described herein may be applied to various wireless communication networks, such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA, and other networks. The terms "network" and "system" are often used interchangeably. 〇〇]^8 networks can implement radio technologies such as Universal Terrestrial Radio Access (UTRA), edma2() (^ 201132093, etc. UTRA includes Broadband CDMA (WCDMA) and other variants of CDMA. cdma 2000 covers IS- 2000, IS-95 and IS-856 standards. TDMA networks can implement radio technologies such as the Global System for Mobile Communications (GSM). OFDMA networks can be implemented such as Evolved UTRA (E-UTRA), Ultra Mobile Broadband.. (UMB Radio technology such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX) > IEEE 802.20 'Flash-OFDM®. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). 3GPP Long Term Evolution (LTE) And LTE-Advanced (LTE-A) is a new version of UMTS that uses E-UTRA, which employs OFDMA on the downlink and SC-FDMA on the uplink. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in the documents of the organization of the "3GPP". In documents from an organization named "3rd Generation Partnership Project 2" (3GPP2) Describes cdma2000 and UMB. The techniques described herein can be used on Wireless networks and radio technologies, as well as other wireless networks and radio technologies. For clarity, some aspects of such techniques are described below for LTE, and LTE terminology is used in much of the description below. Figure 1 illustrates wireless Communication network 100, which may be an LTE network or some other wireless network. Wireless network 100 may include a number of evolved Node Bs (eNBs) 110 and other network entities. The eNB may be an entity that communicates with the UE, and It can be referred to as a base station, a Node B, an access point, etc. Each eNB can provide communication coverage for a specific geographic area. In 3GPP, the term "cell service area" can represent, ΝΒ coverage area and / or 201132093 service The eNB subsystem of the coverage area, depending on the context in which the term is used. The eNB may provide communication coverage for macrocell service areas, pico cell service areas, femtocell service areas, and/or other types of cell service areas. The macro cell service area can cover a relatively large geographic area (for example, a radius of several kilometers) and can allow UEs with service subscriptions to enter Unrestricted access. The picocell service area can cover a relatively small geographic area' and can allow unrestricted access by UEs that have a meal service subscription. The femtocell service area can cover a relatively small geographic area ( For example, the home), and may allow restricted access to UEs that have been associated with the femtocell service area (e.g., UEs in a closed subscriber group (csg)). An eNB for a macro cell service area may be referred to as a macro eNB. An eNB for a picocell service area may be referred to as a pico eNB. An eNB for a femtocell service area may be referred to as a femto eNB or a home eNB (HeNB). In the example shown in FIG. 1, eNB 丨丨〇 a may be a macro eNB for macro cell service area 〇 2a, eNB u 〇 b may be a pico eNB for pico cell service area 102b, and eNB 〇 〇 c may be a femto eNB for the femtocell service area 丨〇 2c. An eNB can support one or more (e.g., three) cell service areas. The terms "eNB", "base station" and "cell service area" may be used interchangeably herein. Wireless network 100 may also include (four) stations. The towel is followed by an entity that is capable of receiving transmissions of data from an upstream station (e.g., an eNB < UE) and transmitting the transmission of the material to a downstream station (e.g., UE or eNB). The relay station may also be a UE that can relay the ttp gate L of the value 其他 for other UEs. In the picture! In the illustrated example 201132093, the relay station n〇d can communicate with the UE 12〇d via the access link, and i communicates with the macro eNB ll〇a by the back-up link, thereby facilitating the eNB U〇a and the UE. Communication between l2〇d. A relay station may also be referred to as a relay eNB, a relay base station, a relay device, or the like. Wireless network 100 may be a heterogeneous network that includes different types of WBs such as 'macro eNB, pico, femto' relay, and the like. These different types of # side can have different transmit power levels, different coverage areas' and different effects on interference in the wireless network @(10). For example, a macro eNB may have a high transmit power level (e.g., two to watts), while a pico eNB, a femto eNB, and a relay may have a lower transmit power level (e.g., "2" to 2 watts). ^, The peripheral controller 130 may consume the group eNB and may provide coordination and control for such eNBs. The network control stomach (10) can communicate with the eNB via the backhaul. These sides can also communicate indirectly, for example, directly or via a line or cable back. The UE 120 may be distributed throughout the wireless network (9), and each (four) may be fixed or mobile, and may also be referred to as a mobile station, a terminal, a subscriber unit, a station, etc., which may be a cellular telephone, a > digit Assistant (PDA), wireless data machine, wireless communication device, handheld device laptop, wireless phone, wireless area loop (wll) station, Zhishao! phone, small notebook, smartbook, etc. The UE can communicate with the macro coffee, the micro eNB, the femto eNB, the relay _, and the like. In Figure 1, the solid arrow arrow indicates the desired transmission between the UE and the service side, which is the summer 201132093 double arrow dotted line designated to serve (10) on the downlink and/or uplink to indicate the UE and Interfering Transmission Between eNBs FIG. 2 illustrates an exemplary frame structure 200 of Frequency Division Multiple 1 (FDD) in LTE. Each of the downstream isochronous towels of the downstream chain can be divided into a plurality of radio frame units. Each radio frame can have a predetermined duration (eg, 10 milliseconds (ms)), and can be: a cable: a sub-frame of "". Each subframe can include two time slots. Each radio frame may include an index to a time slot. Each time slot may include L symbol periods, such as seven symbol periods for a general cyclic prefix (as shown in Figure 2) or for expansion. The six symbol periods of the cyclic prefix. Each subframe...1 symbol period can be assigned an index 〇 to 2L_1. (4) Use orthogonal frequency division multiplexing (_) on the downlink and single carrier on the uplink. The frequency division multiplexing (sc_fdm) 〇〇fdm and SC_FDM divide the frequency range into multiple (NFFT) orthogonal subcarriers, and the subcarriers are also commonly referred to as tones (t_), and the frequency band identification carrier can be disc data. The Mingchuang households and the stimuli are in the system. Generally speaking, in the frequency domain, the interval between the 0FDM and the subcarriers can be: Yes: ...-send, (N w ^ is fixed by 疋'And the total number of subcarriers (NFFT) may depend on the system bandwidth. For example, for 125, 2 H) or 20 megahertz (MHz ·, 128, n... 〇 48 Γ : the number is equal to the dry sub-band, and the sub-band versatile bandwidth can also be divided into if 〇 〇 ' to cover A frequency range, such as a time-frequency resource available for the 1〇8 solid link and the uplink link, can be divided into multiple resource blocks by 201132093. Each resource block can cover 12 subcarriers in one time slot. And may include several resource elements. Each resource element may cover one subcarrier in one symbol period and may be used to transmit one modulation symbol, which may be real or complex. Figure 3 illustrates the use in LTE The two non-existing subframe formats 31〇 and the subframe format 32〇 of the downlink having a general cyclic prefix. The subframe for the downlink may include a control (4) followed by the (4), the sub The frame can be time-multiplexed. The control area can include _m symbol periods of the sub-frame, where Μ can be equal to (1)...go^ is different between each sub-frame and can be the first in the sub-frame Passed in the symbol period The control area can carry control information, such as control information. The data area can include the remaining 2L_M symbol periods of the subframe, and can carry data and/or other information. In LTE + 'eNB can be in the control of the subframe The transmitting entity controls a 指示符-type indicator channel (PCFICH), a physical hybrid indicator channel (PHICH), and a physical downlink control channel (PDCCH). The PCFICH can convey the size of the control region (eg, the value of M). Jane (3) can Affirmative acknowledgement (ACK) and negative acknowledgement (NACK) e-deductions for data transmissions sent on the uplink with hybrid automatic repeat request (HARQ), which may carry downlink grants, uplink grants, and/or other The eNB can also transmit a physical downlink shared channel (PDSCH) in the data area of the subframe. Pdsch can carry ue schedules for data transfer on the downlink. The 201132093 subframe format 310 can be used for _ equipped with two antennas. A Cell Service Area Specific Reference Signal (CRS) can be transmitted from antenna 0 and antenna 1 in symbol periods g, 4, 7, and U. The reference signal is a signal known a priori by the transmitter and receiver and may also be referred to as a pilot frequency. (10) is a reference signal specific to the cell service area, for example based on the cell service area identifier (called generated. In Figure 3, the modulation symbol for a given resource element labeled Ra can be sent from the antenna a on the resource element. The modulation symbols can be transmitted from other antennas on the resource element. The subframe format 320 can be used for eNBeCRS equipped with four antennas to be transmitted from antenna 0 and antenna i in symbol periods (, (1) and U, and in symbol periods I and 8 are transmitted from antenna 2 and antenna 3. For both the subframe format 3 〇 and the subframe format 320, the CRS can be transmitted on evenly spaced subcarriers, which can be based on the cell service area. It is determined that different eNBs may transmit CRSs of their cell service areas on the same or different subcarriers depending on the cell service area of these cell service areas. For subframe format 310 and subframe format 32 For both, resource elements not used for crs can be used to transmit data or control information. Figure 4 illustrates an exemplary subframe format for LTE + Poetry uplink. The subframe may include a control area and a data area, and the subframe may be divided and multiplexed. The control area may be formed at two edges of the system bandwidth and may have a configurable size. The data area may include a control area All resource blocks not included in the system may be allocated to the UE by the resource block in the control area to send the control side to the side. The resource block in the data area may also be assigned to the UE to send data to _ 12 201132093. The UE may send control information on the Physical Uplink Control Channel (PUCCH) in the resource block 41 〇a and the resource block 410b assigned in the control region. The UE may allocate the resource block 420a and the resource region in the data area. In block 420b, only data or both data and control information are transmitted on the physical uplink shared channel (PUSCH). The uplink transmission can span the two time slots of the subframe and can jump on the frequency, such as As shown in Figure 4. PCFICH, PDCCH, PHICH, PDSCH, PUCCH, PUSCH, and CRS in LTE are entitled "Evolved Universal Terrestrial Radio Access (E-UTRA); Physical Channels and Mo The description is described in 3GPP TS 36.211, which is publicly available. The UE may be located within the coverage of multiple eNBs. One of these eNBs may be selected to serve the UE. The serving eNB may be based on, for example, receiving signals Various criteria such as strength, received signal quality, path loss, etc. are selected. The received signal quality can be quantified by the Signal Noise Interference Ratio (SINr) or some other metric.

The UE may operate in a dominant interference scenario in which ue may observe high interference from one or more interfering eNBs. Significant interference scenarios may occur due to restricted associations. For example, in Figure i, UE 120c may be close to femto eNB 110c and may have high received power to eNB u〇c. However, the UE 120c may not be able to access the femto 110c' due to the restricted association and may subsequently connect to the macro eNB 13 201132093 ll〇a with lower received power. The UE 12〇c may then observe the femto eNB from the femto eNB and may also cause high interference to the femto eNB 11 〇c on the uplink key. The interference significant scenario may also occur due to range expansion, which is the scenario in which the UE is connected to a lower path loss and possibly lower smR than some other eNBs detected by the UE. ...b. For example, in Figure i, UE 120b may be closer to pico eNBu 〇 b and not so close to macro eNB ll 〇 a, and may have lower path loss for pico eNB ii 〇 b. However, due to the lower transmit power level of the pico eNB compared to the macro eNB ll 〇 a, ue may have lower received power for the pico eNB 110b than for the macro eNB 11 〇 & However, it may be necessary for UE12〇b to be connected to the pico eNB u〇b due to lower path loss. For a given data rate of UEi2〇b, range extension may result in less interference on the uplink. The range extension may also provide cell service area split gain on the downlink since multiple pico eNBs may serve UEs that may otherwise be served by the macro eNB. Range expansion can therefore improve overall network performance. Disturbing significant scenarios may also occur due to relay operations. For example, a relay eNB may have a good access link to the UE and a bad backhaul link to the donor eNB for the relay service. Due to the bad backhaul link of the relay eNB, the UE can then communicate directly with the donor eNB. The UE may then observe high interference from the relay eNB on the downlink and may cause high interference to the relay eNB on the uplink. The interference significant scenario may also occur when the relay eNB is used for range extension, which is similar to the condition of the range extension of the pico eNB. In one aspect, the communication in the dominant channel can be supported by TDM slashing of the downlink control resources, which are used to transmit control messages on the downlink. For partitioning, different time resources can be assigned to different # carry. Each _ may send its control resource m in its assigned time resource, which may have reduced interference from strong interfering eNBs (e.g., no interference). Each _ can avoid transmitting control information in time resources allocated to other eNBs (or can transmit control information at a lower transmit power level), and can avoid causing high interference to other eNBs. This may enable the UE to communicate with the weaker serving eNB in the presence of a strong interfering eNB. The eNB can be classified as "weak" or "strong-in-design" based on the e NB receiving station at the UE (and τ 甘士人 \ τ 力 力 ( (not based on the eNB's transmit power level) The frame level performs TDM partitioning of downlink control resources. In this design, different subframe sets may be allocated for different _. Each eNB may send in the control area allocated to the subframe of the _ Its control information. Each side can avoid sending control information in the control area of the subframe allocated to other eNBs (or can transmit control information at a lower transmit power level). Figure 5 illustrates an exemplary interlace (interUce) a structural outline, which can be used for each of the downlink and uplink keys of the LTE. In Figure 5, the index can be defined as 0 to Q-1 # Q interlaces, eight Q can be equal to 4, 6, 8, 1 or some other value. Each interlace can include a sub-frame with Q frames spaced apart. In detail, the interlace q can be 15 201132093 to include the sub-frame q, q + Q, q + 2Q, etc., where qe{ 〇,...,Q_1 }. In a design 'can Different eNBs allocate different interlaces. For example, 'eight interlaces can be defined' may be two interlaced bodies and interlaces 4 for the pico 11 0b in Fig. 1, and the rest may be allocated for the macro eNB 11 〇a Six interlaces. The pico eNB 110b can transmit its control information in the control region of the subframe in the interlaced body and the interlace 4, and can avoid sending in the control region of the subframe in the other six interlaces. Controlling. In contrast, the macro eNB ll 〇 a can transmit its control in the control region of the subframe in the interlace 1, interlace 2, parent dislocation 3, interlace 5, interlace 6, and interlace 7. Information, and can avoid sending control information in the control area of the subframes in the other two interlaces. It is also possible to allocate different subframe sets defined by other eNBs in other ways. In general, available sub-messages A block may be assigned to any number and each eNB may be assigned any subframe set. Different eNBs may be assigned the same or a different number of subframes. Each may be assigned a subframe. Send it in the control area Information, and to avoid sending control information in the control area of other subframes (or sending control information at a lower transmit power level). As described above, the control area of the subframe may have M symbols The configurable size of the period. Since the size of the control area is variable, the interfering eNB may not know the size of the control area used by the weaker eNB. In one design, the 'interfering eNB can assume the maximum possible control area size, The system bandwidth of 5 MHz or greater in LTE can be three symbol periods. Interfering eNBs can then avoid transmitting 16 201132093 negative or control information within a hypothetically sized control region. In another design, each eNB may have a configured control zone size's small may be determined via negotiation between eNBs or may be assigned by a designated network entity. The interfering eNB may then clear the control region of the other eNB within a number of symbols determined by the configured control region size of the other eNB. In another design, the gamma partitioning of the downstream key source can be performed at the symbol level. In this design, different symbol periods can be used in different eNB^ = subframe control areas. Each eNB may send its control information in each of the subframes assigned to the eNB, or may avoid transmitting control information in the remaining symbol periods of the control region. For example, the control region may include M = 3 symbol periods, the symbol period 2 in each subframe control region can be allocated for the pico eNB 110b in FIG. 1, and the symbol period 〇 and symbol period 1 can be assigned to the E set eNB]i 〇a. The pico eNB 110b can transmit its control information in symbol period 2 of each subframe and can avoid transmitting control information in the symbol period 〇 and symbol period i of each subframe. Conversely, the macro side u〇a can transmit its control information in the symbol period 〇 and symbol period j of each subframe, and can avoid transmitting the control element m in symbol period 2 of each subframe. In general, the period in each subframe control zone can be assigned to as many different eNBs as the river. Each of the symbol weeks eNB may be assigned one or more symbol periods in the control region. In yet another design, TDM partitioning of downlink control resources can be performed on both the subframe level and the symbol level. It is possible to assign different symbol periods in the control dragons of different subframes for different _. For example, you can define 17 201132093: a parent body, and the control area can include M = 3 symbol periods. The interlace is assigned to the macro_110a of Fig. J. Interlace 2: Interlace: 4 and all three symbols in the control region of the neutron frame of the parent faulty body' and may allocate two symbol periods G° in the control region of each of the remaining subframes for the macro eNB 110a. An interlace can be allocated for the pico eNB 11Gb! Symbol period 1 and symbol period 2 in the control region of the interleaver 3, interlace 5, and interlace 7 sub-frames. The downlink control resource # TDM partitioning may also be performed in other manners, such as based on other time units. In a design, not @_彳, which may potentially cause high interference to each other, is pre-allocated with different time resources, for example, by a designated network entity. In another design, the side may negotiate TDM partitioning (e.g., via backhaul) to allocate sufficient time resources to each eNB. In general, TDM partitioning can be static, non-changing, or semi-static and infrequently changed (eg, every i 〇〇 milliseconds change), or dynamic and frequently changing (eg, per sub-information) The box or every radio frame changes). In another cancer sample, the communication in the interference-significant scenario can be supported by FDM allocation of uplink control resources, which are used to transmit control information on the uplink. For FDM partitioning, different eNBs can be assigned different frequency resources. The UE served by each eNB may send control information in the allocated frequency resources, which may have reduced interference from UEs communicating with other eNBs. This can enable each eNB to communicate with its UE in the presence of a highly interfering UE. Figure 6 illustrates the design of uplink control for three eNBs in an interference significant scenario 18 201132093 Resource FDM partitioning. In the example shown in Fig. 6, the frequency band η is used for the uplink ' of the first eNB (e.g., macro eNBu 〇 a in Figure!) and may have a bandwidth corresponding to the system bandwidth. The piggyback 2 can be used for the uplink of the second eNB (e.g., pico eNB u〇b) and can have a smaller bandwidth than the frequency |1. Band 3 can be used for the uplink of the third eNB and can have a smaller bandwidth than Band 2. The UE communicating with the first eNB may transmit the PUCCH in the control region 610 formed near the two edges of the band ,, and may transmit the PUSCH in the data region 612 at the center of the band ι. The ue communicating with the second eNB may transmit puccH in the control region 62A formed near both edges of the band 2, and may transmit puscH in the data region 622 in the center of the band 2. The UE communicating with the third eNB may transmit the PUCCH in the control region 630 formed near both edges of the band 3, and may transmit the PUSCH in the data region 632 in the center of the band 3. The control area 61, the control area 62, and the control area may be non-overlapping as shown in Figure 6 in order to avoid interference with the uplink control information of the three eNBs. The control region 61, the control region 62, and the control region 630 may be defined by different PlJCCH offsets, and each PUCCH offset may indicate an outer frequency for the control region of the eNB. Figure 6 illustrates an exemplary design of FDM partitioning for uplink control resources. FDM partitioning can also be performed in other ways. For example, frequency bands for different eNBs may have the same bandwidth, but may be shifted in frequency to avoid control region overlap. It may be desirable to use TDM partitioning for downlink control resources. This 19 201132093 may allow the eNB to transmit pDCCH over the entire system bandwidth and obtain frequency diversity. However, FDM partitioning can also be used for downlink control resources. The use of FDM partitioning for uplink control resources can be desirable. This allows the UE to transmit puccH in each subframe to reduce latency. The partitioning may not affect the operation of the UE since the pUCCH is typically transmitted in one or several resource blocks in each time slot, as shown in FIG. However, TDM partitioning can also be used for uplink control resources. For clarity, most of the following description assumes that TDM partitioning is used for downlink control resources and FDm partitioning is used for uplink key control resources. = Interference mitigation can also be used to support communication in a significant interference scenario. Interference mitigation can eliminate or reduce the transmit power of the interfering transmission, thereby achieving a higher received signal quality for the desired transmission. Interference mitigation can be performed in the short term and on demand (for example, on a frame-by-frame or packet-by-packet basis).

Figure 7 is a diagram showing the design of a downlink data transmission scheme 700 without interference mitigation. The service side may have data to be transmitted to the UE and may be knowledge that the UE is observing high interference on the downlink. The serving eNB may receive a pilot frequency measurement report from the UE and may not be able to identify a strong interfering eNB. The serving eNB may trigger a RUM trigger on the Send Resource Usage Message (RUM): it may be broken into a RUM request, an interference mitigation trigger, and the like. The RUM asks the UE to request the eNB to clean up or reduce the downlink (eg, the specific sub-band in the field material (four) material resource subframe), the priority of the request, and / 20 201132093 or other information .

The UE served by the serving eNB may receive the RUM trigger and may send an uplink RUM to the interfering eNB (the UL_RUMh interfering eNB may receive other UL-RUMs from other ues that observe high interference from the interfering eNB. UL- The RUM may also be referred to as a reduced interference request. The UL-RUM may require the interfering eNB to reduce interference on the designated data resource, and may also transmit the priority order of the request, the target interference level to the UE, and/or other information. The eNB may receive the UL-RUM from its neighboring ue and/or the UE, and may grant or reject each request for interference reduction based on the priority order of the request, the buffered state of the interfering eNB, and/or other factors. If the request from the UE is granted, the interfering eNB may adjust its transmit power and/or control its transmission in order to reduce interference to the UE. The interfering eNB may determine the transmission it will use on the designated data resource. Power level pDL DMA. The interfering eNB can then transmit the downlink with the power level Pdlrqirs: the source quality indicator reference signal (DL-RQJ-RS),

7 /, T ^ DL-RQI-rS can be scaled to Pdl_data or a scaled version of pDL data. The reference number can also be referred to as a power decision pilot frequency, a power decision pilot frequency indicator channel (PDPICH), and the like. The interfering eNB may send DL-RQI-RSs on the dl rqi rs resources, which may be paired with the specified data resources. For example, R data resource sets may be available in a subframe (and R corresponding DL_RQI_RS resource sets may be available in subframe h, where X may be a solid offset. Each data resource set may correspond Each of the DL_RQI_RS resource sets may correspond to a resource block of 21 201132093. The interfering eNB may send the DL-RQI-RS on the DL-RQI-RS resource r, the DL-RQI- The RS resource r' may correspond to a designated material resource r. Similarly, the serving eNB may receive a UL-RUM from its neighboring UEs and may transmit a DL-RQI-RS in response to the UL-RUMs. The eNB may send its DL-RQI-RS on the DL-RQI-RS resource, and the DL-RQI-RS resources may be shared by all eNBs. The DL-RQI-RS resource may be pre-configured by all eNBs in the data area. Some resources left to transmit the DL-RQI-RS may be otherwise defined. The DL-RQI-RS resource may include a sufficient number of resource elements to enable accurate SINR estimation. The DL-RQI-RS may enable the UE to be more capable. Accurately estimate the received signal quality of its serving eNB on the specified data resource. In DL-RQI-RS At the source, the UE may receive the DL-RQI-RS from the serving eNB and from the interfering eNB. The UE may estimate the SINR for the DL-RQI-RS resource of the serving eNB based on the received DL-RQI-RS, and may be based on the estimate. The SINR determines the RQI. The RQI may indicate the received signal quality on the designated data resource and may be similar to the Channel Quality Indicator (CQI). If the strong interfering eNB reduces interference on the designated data resource, the RQI may indicate at this The data resource has good received signal quality for the serving eNB. The UE may send the RQI to the serving eNB on the PUCCH. The serving eNB may receive the RQI from the UE, and may schedule the UE to perform data transmission on the assigned data resource, and the assigned The data resource may include all or a subset of the specified data resource. The serving eNB may select a modulation and coding scheme (MCS) based on the RQI, and 22 201132093 may process the data according to the selected MCS. The serving eNB may generate a downlink (DL) Permission, which may include assigned data resources, selected MCS, etc. The serving eNB may send a downlink grant to the UE on the PUCCH, And transmitting the data to the UE on the PUSCH. The UE may receive the downlink grant and data from the serving eNB, and may decode the received data transmission based on the selected MCS. If the data is correctly decoded, the UE may obtain an ACK. Alternatively, if the data is erroneously decoded, a NACK is obtained, and the UE may send the ACK or NACK to the serving eNB on the PUCCH. Figure 8 illustrates a design of a scheme 800 for uplink data transmission with interference mitigation. The UE may have data to be transmitted to the serving eNB and may send a scheduling request on the PUCCH. The scheduling request may indicate the priority of the request, the amount of data to be sent by the UE, and the like. The serving eNB may receive the scheduling request and may send an RQI-RS request on the PDCCH to request the UE to transmit an uplink RQI reference signal (UL-RQI-RS). The serving eNB may also send a downlink RUM (DL-RUM) on the PDCCH to require the interfering UE to reduce interference on the designated data resource.

The UE may receive an RQI-RS request from the serving eNB and may also receive one or more DL-RUMs from one or more neighboring eNBs. The UE may determine the transmit power level PUL-DATA that it will or may use on the designated material resource based on the DL-RUM from all neighboring eNBs. The UE may then transmit a UL-RQI-RS at a transmit power level Pul-rqi-rs on the UL-RQI-RS resource, which may be equal to PuL-DATA 23 201132093 or .Pul-data .Scaled version. In one design, the UE may transmit UL-RQI-RS on UL-RQI-RS resources, which may be common to all UEs. The UL-RQI-RS resource may be some resources reserved by the eNB in the data area for the UE to transmit the UL-RQI-RS, or may be otherwise defined. The eNB may receive UL-RQI-RS from the UE and from the interfering UE on the UL-RQI-RS resource, and may estimate the SINR of the UE on such resources. If the interfering UE will clean up the specified data resources, the SINR may be good. The serving eNB may then schedule the UE on the designated material resource and may select the MCS for the UE based on the estimated SINR. The serving eNB may generate an uplink grant, which may include the selected MCS, the fingerprint's data resources, the transmit power level for the assigned data resource usage, and the like. The serving eNB may send an uplink grant to the UE on the PDCCH. The UE may receive the uplink grant, process the data based on the selected MCS, and transmit the data on the PUSCH on the assigned data resource. The serving eNB may receive and decode the information from the UE, determine an ACK or NACK based on the decoding result, and transmit the ACK or NACK to the UE on the PHICH. Figure 7 illustrates an exemplary sequence of messages that may be used to support data transmission on the downlink with interference mitigation. Figure 8 illustrates an exemplary sequence of messages that may be used to support data transmission on the uplink with interference mitigation. Interference mitigation on the downlink and/or uplink may also be supported with other sequences of messages used to determine the use of data resources between eNBs. For example, the eNB may communicate via the backhaul in order to determine (i) the particular downlink data resource and/or transmit power level that different eNBs will use for the next 24 201132093 line interference mitigation, and/or (Π Specific uplink data resources and/or transmit power levels that different UEs will use for uplink interference mitigation. Figures 7 and 8 assume that each eNB and each .UE can send control information in the appropriate subframe. For the schemes in Figures 7 and 8, the eNB should be able to reliably transmit downlink control messages on the downlink, such as RUM triggering, DL-RUM, RQI-RS request, downlink, even in a dominant interference scenario. Licensing, uplink grants, and ACK/NACK feedback. In addition, the UE should be able to reliably transmit uplink control messages, such as UL-RUM, scheduling request, RQI, and ACK/NACK feedback, on the uplink, even in a dominant interference scenario. The reliable transmission of the downlink control message can be achieved by the TDM partitioning of the downlink control resources as described above. Reliable transmission of uplink control messages can be achieved by FDM partitioning of uplink control resources as also described above. Figures 7 and 8 also illustrate an exemplary physical channel in LTE that can be used to transmit control messages on the downlink and uplink. In one design, the eNB may send downlink control messages such as RUM trigger, DL-RUM, RQI-RS request, downlink grant, and uplink grant on the PDCCH, and may send ACK/NACK feedback on the PHICH. . The eNB may also send multiple downlink control messages (e.g., DL-RUM and RQI-RS requests) in the same control message. The eNB may reliably transmit such downlink control messages in the subframe control area allocated to the eNB, the subframes shall have reduced interference (e.g., no interference) from the interfering eNB. 25 201132093 In one design 'the UE may send uplink control messages such as UL-RUM, Schedule Request, RQ! and ACK/NACK feedback on PUCCH (as shown in Figures 7 and 8), or on pusCH Transmitted with the data (not shown in Figures 7 and 8), the CUE can reliably transmit the uplink control messages in the control region assigned to its serving eNB, where the interfering UEs are communicating with neighboring eNBs. High interference should be cleared. In yet another aspect, cross-frame control can be used to support data transmission on the downlink and/or uplink, where TDM partitioning is performed on downlink control resources. Different sub-frames can be allocated to different eNBs by TDM to send control information. Each eNB may send a control message in a subframe allocated to the eNB to support data transmission. Due to the different subframes allocated for different eNBs, different eNBs may have different isochrones for transmitting control messages. Using the cross-frame control, the control information (eg, permission 'ACK/NACK, etc.) can be sent in the first subframe, and can be applied to the data transmission in the second subframe, the second subframe The box can be a variable number of sub-frames from the first subframe. Figure 9 illustrates the scenario for the downlink keyway data transmission with interference mitigation when TDM partitioning is used for downlink control resources. In the example shown in FIG. 9, 'eight interlaces are defined, interlaced body and interlace 4 are allocated for the measurement, interlace i and interlace 5 are allocated for eNB 2, and interlace 2 and interlace are allocated for eNB 3. 6, and the interlaced body 3 and the interlaced body 7 are assigned to the transfer bucket. Each eNB may send control information in the control region of the subframe in its assigned interlace. Each _ can send data in the data area of any child 26 201132093 frame and can contend with other eNBs for downlink data resources. Secret 1'_2, side 3, and _4 are services for UE1, UE2, UE3, and UE4, respectively. Figure 9 assumes a 1 subframe delay between the receipt of the incoming message and the transmission of the corresponding outgoing message. For the data transmission on the downlink, the eNB eNB2, the eNB3* eNB 4 may respectively send in the control area of the subframe 子, the subframe 1, the subframe 2 and the subframe 3 in the interlace allocated thereto. RUM trigger. UE 1, UE 2, UE 3, and UE 4 may receive RUM triggers from neighboring eNBs, and may transmit UL_RUMs to their serving eNBs in subframe 2, subframe 3, subframe 4, and subframe 5, respectively. These UEs may also transmit such UL_RUM<aeNBi, eNB 2, eNB 3, and eNB 4 may receive ul_rum from the served UE in the same subframe (e.g., subframe 5), and may be in the same downlink resource. Sent in subframe 7

DL-RQI-RS. UE 1, UE 2, UE 3 and UE 4 may receive DL-RQI-RS from these eNBs, estimate the SINR and send rqi to its serving eNB in subframe 9. eNB eNB 2, eNB 3 and eNB 4 may respectively be from 1, 2

UE 3 and UE 4 receive the RQI and can schedule the UE for data transmission on the downlink. Due to the processing delay of 1 subframe, eN]B丨, eNB 2, eNB 3, and eNB 4 can respectively transmit subframe 12, subframe 13, subframe 14 and subframes of the interlace allocated thereto. The downlink grant is sent to UE 1, UE 2, UE 3 and UE 4 in block 11. The eNB 1, the eNB 2, the eNB 3, and the eNB 4 may send data to the UE 1, the UE 2, the UE 3, and the UE 4 in the subframe 14 to the subframe 17, respectively, and the subframe 14 to the subframe 27 201132093 17 can be shared by the eNB. UE 1, UE 2, UE 3 and UE 4 may receive data from their serving eNB in subframe 14 to subframe 17, and may send ACK/NACK in subframe 16 to subframe 19, respectively. Give feedback. As shown in Figure 9, the 'eNB can send its control information' to avoid high interference with control information. One or more eNBs may transmit data in the same subframe and may adjust their transmit power and/or control their transmission to avoid high interference with the data. With cross-frame control, the downlink grant can have a variable delay with the corresponding data transmission (rather than transmitting in the same subframe as the corresponding data transmission as shown in Figure 7). The variable delay can be generated by assigning different subframes to different eNBs to transmit control information. In addition, a given downlink key grant can be applied to data transmission in one or more subframes on the downlink. In the example shown in Figure 9, each side can transmit control information in every fourth subframe and - a downlink grant can be applied to data transmission in up to four subframes. In general, if _ can send control information in every Sth subframe, then a downlink_license can be applied to data transmission in up to S subframes. The eNB may send a trigger in the subframe to which it is assigned. After _, dl_rqi_rs can be sent on the same downlink f source, so that it can be expected for the subsequent (four) transmission on the downlink. There may be a control between the job trigger from the side and the DL-RQI-RS from the side. The cross-sub-frame 10 is used to illustrate the use of the (10) partition for downlink control resources. 28 201132093 Design of a scheme for uplink data transmission with interference mitigation. The example in Figure ί a assumes that there are four eNBs eNB 2, eNB 3 and eNB 4, which serve four UEs 1, UE 2, UE 3 and UE 4, respectively. As described above with respect to Figure 9, each eNB can be assigned two interlaces of eight interlaces.

For data transmission on the uplink, 1; £1; £2, 1; 63 and 1; £4 can send scheduling requests to the serving eNB 1, eNB 2, eNB 3, and eNB 4, respectively (not shown in Figure 10 Graphic). The eNBs j, _ 2, _ 3, and _ 4 may respectively send the DL-RUM to the interfering UE in the subframe, the subframe 子, the subframe 2, and the subframe 3 of the interlace allocated thereto, And sending the RQI-RS request to the served UE. The UE丄, ue 2, ue 3, and UE 4 may receive the DL_RUM from the neighboring eNB and receive the RQI-RS request from its serving eNB. UE 1, UE 2, UE 3 and UE 4 may send ul_rqi_rs in subframe 5 on the same uplink resource. The eNB worker, the eNB 2 'eNB 3 and the eNB 4 may receive the UL_RQI_RS from the UE, estimate the SINR, and select the MCS eNB 1 , eNB 2, eNB 3 and eNB 4 for the UE 丨, UE 2, UE 3 and UE 4, respectively. The UE is scheduled to perform data transmission on the uplink link, and can be respectively sent to the UE 1 and the UE 2 in the subframe 8, the subframe 9, the subframe 10, and the subframe 7 of the interlace allocated thereto. UE 3 and UE 4 transmit an uplink grant. UE 1, UE 2, UE 3 and UE 4 may send data to subframes eNB, eNB 2, e. 3 and eNB* in subframe 12 to subframe 15, respectively. i. eNB 2, eNB 3 and _ 4 may receive data from the UEs served by them in subframe i2 to subframe 15. Attributable to the location of the 1 subframe 19 201132093 The delay eNB1 may send an ACK/NACK in the subframe 16 for the data received from the UE 1 in the subframe & subframe 13 and the subframe 14 And an ACK/NACK for the material received in the subframe 15 can be transmitted in the subframe 2(). Side 2 may send an ACK/NACK for the information received from ue 2 in subframe 12 to subframe 15 in subframe n. The eNB 3 may send an ack/nack for the data received from the UE3 in the subframe u in the subframe h, and may send in the subframe 18 for the subframe 13, the subframe, and the subframe. The ACK/NACK of the received data in 15 can be sent in the subframe μ by ACK/NACK for the data received from the ue 4 in the subframe 12 and the subframe 13, and can be in the subframe 19. Sending ACK/NAci for the data received in subframe 14 and subframe 15 As shown in FIG. 10, the eNB may send control information in the subframe of the interlace allocated for it. - or more (5) UE may Send data in the same subframe, and adjust its transmit power and/or control its transmission to avoid high interference to the data. With cross-frame control, the uplink grant can have variable transmission with the corresponding data. Delay. The variable delay may be generated by assigning different subframes to different eNBs to transmit control information. In addition, a given uplink grant may be applied to data transmission in one or more subframes on the uplink. Can be sent in the same subframe Data transmission on the link. The eNB may send ACK/NACK feedback in different subframes of the interlace allocated for it. With cross-frame control, the ACK/NACK feedback may have a variable delay with the corresponding data transmission. ACK/NACK feedback for data transmission in a variable number of subframes may be sent in a given subframe 30 201132093 吼c. The eNB may send DL-RUM and RQI_RS in different subframes of the interlace allocated for it. Request. The UE can be on the same uplink resource.

The UL-RQI-RS is transmitted to enable the eNB to estimate the SINR that can be expected for subsequent data transmissions on the uplink. There may be a /variation delay between the request from the eNB and the RW from the _UL. This variable delay can be supported by cross-frame control. 9 and 1B illustrate an exemplary isochronous line in which four eNBs may cause high interference to each other and may transmit control information for each eNB > two interlaces. It is also possible to allocate less or more interlaces to the eNB to transmit control information. The NB may have different isochronous lines for transmitting various control messages. The downlink data transmission with interference mitigation for 9 is on the downlink. There may be a variable delay between the grant and the data transmission on the downlink, as shown in Figure 9. The eNB may send the downlink before the data transmission or with the data transmission in any subframe assigned to the secondary. Permission. For uplink data transmission with interference mitigation 'There may be a variable delay between the uplink key grant and the corresponding data transmission on the uplink key' as shown in Figure 10. The side may be in any child assigned to the eNB. The frame sends an uplink grant before the data transmission. It can also send ACK/NACK feedback after data transmission in any subframe of the knife sn eNB. _ used to send downlink control messages and ACK/NACK feedback. The specific subframe can depend on the interlace assigned to the secret. 31 201132093 For data passes without cross-frame control (eg, as shown in Figures 7 and 8) There is a fixed delay between the various transmissions. For data transmissions with cross-frame control (eg, as shown in Figures 9 and 〇), there may be variable delays between the various transmissions. Different data transmission scenarios may send permission, data, and ack/nack sub-messages. For scenarios with cross-frames (4), the offset 乂 and offset 乂 may be variable '' and may depend on the allocation to the eNB Sub-frame. Scenario 丄 DL/UL license information ack/nack Figure 7; cross-sub-frame control tricky downlink data transmission wheel frame t sub-frame I ——---- v Frame sub-frame tt + 4 sub-frame t+4 —----- sub-frame t+8 Figure 8 shows no uplink data transmission with cross-frame control. Figure 9 has cross-frame control. Downlink data 偻 wheel r~~— _ subframe frame t — t + x subframe t + X + y Figure 10 has uplink data transmission with cross-frame control*----- — Γ~ sub-frame t sub-frame t + x sub-frame t + X + yv only 椚 1f7, scheduling each UE in four sub-cells and β, can schedule UE in Data transmission in multiple frames. Sub-frames for data ageing (4) H-species Μ 'Can send a single downlink or uplink for data transmission in the scheduled sub-transportation 32 201132093 License in another In the calculation, one downlink or uplink material may be transmitted for (4) transmission in each scheduled subframe. The downlink and uplink grants may also be sent in other manners. The control information can be transmitted by dividing the TDM into different frames. The eNB can avoid sending control information in the control area allocated to the subframes of other sides. On the other hand, the side may continue to transmit certain #日疋 channels and/or signals in the control area and/or data area of the subframe allocated to other eNBs. For example, the eNB may transmit CRS in all subframes (i.e., in the subframe allocated to the eNB and in the subframes assigned to other eNBs. The designated channel and/or signal may be used to support the old #UE's operation 'The old UEs may wish to have such channels and/or signals' and if there are no such channels and/or signals, then the legacy UE may not function properly. In an aspect, the UE may perform interference cancellation for one or more designated channels and/or signals in order to improve the performance of control information and/or data. For interference cancellation, the UE may estimate interference due to a specified channel or signal, Eliminating the estimated interference and then recovering the desired channel or signal after eliminating the estimated interference. In one design, the UE may perform interference cancellation for the CRS, which may be by each eNB in the control region of each subframe And transmitting in the data area, for example as shown in Figure 3. The CRS from the eNB may cause interference in one or more of the following ways: • CRS conflicts with CRS multiple eNBs advertise on the same resource element CRS, 33 201132093 • CRS pair control conflicts—send its CRS on the resource element used by another eNB for control information, and • CRS for data collision eNB sends on the negative source element used by the other eNB for data The CRS. The UE may perform interference cancellation for CRS for CRS, or (10) for control collision or CRS for data collision or a combination thereof. The CRS and its serving eNB may be determined based on the serving eNB and the interfering side cellular service area id. Whether there is a (10) collision with the CRS between the interfering eNBs #CRS. If so, the estimated interference can be obtained by estimating the interference due to the CRS from the interfering pair and removing the estimated interference from the received signal at the UE. Interference cancellation signal, ride (10) pair (10) collision to perform interference cancellation eUE can then perform channel estimation from the serving eNB & CRS based on the interference cancellation signal. Can eliminate interference due to CRS from interfering eNB Obtain a more accurate channel estimation for the service café. The UE can perform interference/distraction on the control conflict for (10) by the following operations. eNB # CRs interference, eliminates the estimated interference, and processes the interference-cancelled signal (rather than receiving the illusion to recover the service-sent control information. Yeah can also control by considering interference from the interfering eNB @ CRS The information is decoded '. For example, the UE can perform decoding by: (1) giving a smaller weight to the symbol of the resource element _ from the interfering coffee (10) and (ii) detecting from other resource elements The symbol to which the greater-weighted UE is assigned may perform interference cancellation on the data collision for the CRS in a manner similar to the method of performing interference cancellation for the CRS on the control collision. In another design, the eNB may be assigned a cell service area ID for eNBs that may interfere with each other such that their CRS is transmitted on different resource elements and therefore does not become large. This can improve the channel estimation performance of the UE. It is possible to perform interference cancellation on CRS for control conflicts and/or crs for data collisions. The wireless network can support operation on the downlink - or multiple carriers and on one or more carriers on the uplink. The carrier can represent the range of frequencies used for communication and can be associated with certain characteristics. For example, the carrier can be associated with system information or the like that describes the operation on the carrier. Carriers can also be referred to as channels, frequency channels, and the like. The carrier of the downlink may be referred to as a downlink carrier, and the carrier of the uplink may be referred to as an uplink carrier. The techniques described herein can be used for multi-carrier operation. In one design, the techniques described herein may be performed for each downlink carrier and each uplink carrier. For example, the eNB may be assigned a set of subframes on each carrier to transmit control information on the downlink. The eNB may be assigned an interlaced subframe set of different downlink carriers such that the eNB may send control information in as many subframes as possible. It is also possible to assign each uplink key & m frequency range to _ to receive control information on the uplink. The RAKE may send a RUM trigger, dl_RUm, rqi_rs request, ^ and/or other downlink control messages for the downlink carrier in the assigned subframe of each downlink carrier. The eNB may receive scheduling requests, UL-RUMs, and/or other uplink control messages for the uplink carrier in the allocated frequency range of each uplink carrier. The UE may monitor each downlink carrier, and the UE may receive control information on the downlink carrier, and may perform RUM triggering, dl_rum, gratification request, grant, and/or other downlink key control messages. The ue may send a scheduling request, UL-deletion, and/or other uplink control message on the allocated frequency range of the uplink carrier on each uplink carrier. In another design, the eNB may be assigned a set of subframes on a designated downlink carrier to transmit control information for all downlink carriers. Also, the eNB is equipped with a frequency range on the uplink carrier to receive control information for all uplink carriers. The side may send a RUM trigger, DL_RUM, qing_RS request, grant, and/or other downlink control message for all downlink carrier carriers in the assigned subframe on the designated downlink carrier. The eNB may receive scheduling requests for all uplink carriers = L-RUM and/or other uplink control messages in the allocated frequency range of the designated uplink carrier. The ue can monitor the designated downlink carrier' and can refer to coffee triggers, DL_RUM, RQI_RS requests, grants, and/or other downlink control messages for all downlink key carriers. The UE may send scheduling requests, UL-RUMs, and/or other uplink control messages for all of the upper (four) way money in the frequency range of the assigned uplink carrier. The techniques described herein can support communication in a dominant situation. In the interference-significant scenario, the UE can reliably transmit 4-interference from the serving eNB on the resource on which the interfering side is not transmitting. The resource that can be used by the serving eNB to transmit control information and the service to be used for transmitting data can be transmitted. The resources are cleaned up (or on the resources with low power 36 201132093 level (4), the downlink can be narrowed down and the uplinks can be divided to statically or for the resources used to control the information. Semi-static and 1 生 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 Figure 11 illustrates the setup of a programmer (10) for exchanging data in a wireless network. The ten program 1100 can be executed by a UE, a base station/eNB, or some other entity. It can be in the first + k-frame The middle parent exchanges (eg, sends or receives) control information (block 1112). The data can be exchanged in the second subframe based on the control information exchanged in the first subframe (party * ghost m4). The second sub-frame can be changed from the first sub-frame by a variable number of sub-frames. In the third sub-frame, the parent can change the f @ ack/nack feedback for the exchange in the first sub-frame (block m6) The third sub-frame may also be a variable number of sub-frames from the second sub-frame. In one design, the first sub-frame may be assigned to a base station and may have reduced from at least one interfering base. The interference of the station. The first sub-lambda box may be used in the base station and the at least one interfering base station, and the sub-frame may be assigned a sub-frame set to send control information. The control shell λ can be sent in the subframe frame, and the control information can be avoided from being sent in the remaining subframes. The first subframe can belong to the subframe set. In another design, the base station can be allocated. At least one interlace transmits control information. The subframes in the at least one interlace may have reduced interference from the at least one interfering base station. The first subframe may belong to the 37 I assigned to the base station. 201132093 At least one interlace. In the case of a seed, the base station (e.g., eNB 1 in Figure 9) may execute procedure 11 00 to transmit data on the downlink. The base station may be in the first subframe in block 1112 ( For example, the downlink grant is sent in subframe 12), and the data may be sent in a second subframe (e.g., subframe 14) in block 1114. The base station may be in the third subframe in block 1116 ( For example, in the subframe 16), an ACK/NACK feedback for the data sent in the second subframe is received. The base station may send a message (eg, a RUM trigger) in the fourth subframe (eg, subframe). Requesting interference reduced on the downlink in the second subframe. The fourth subframe may be a variable number of subframes from the second subframe. The base station may transmit a reference signal (e.g., dl-rqlrs) in a fifth subframe (e.g., subframe 7), and the fifth subframe may be a variable number of subframes from the fourth subframe. In another design, a UE (e.g., UE 1 in Figure 9) may execute routine 1100 to receive data on the downlink. The UE may receive the downlink grant in the first subframe (e.g., subframe 12) in block ni2, and may receive the data in the second subframe (e.g., subframe 14) in block 1U4. The UE may send an ACK/NACK feedback for the data received in the second subframe in the third subframe (subframe 16) in block 1116. In yet another design, a base station (e.g., i in Figure i) can execute program 1100 to receive data on the uplink. The base station may send an uplink grant "T' in the first subframe (e.g., subframe 8) in the square soul 1112 and may be in the second subframe in block 1114 (e.g., subframe 38 201132093) Receiving data in i". The base station may send a^nACK for the data received in the first subframe to transmit the first subframe in the third sub-purity (for example, subframe 16). The variable number of sub-frames may be in the frame. The base port may send a message (eg, DL RUM) in the fourth subframe (eg, subframe 〇) to find the interference SS that is reduced on the uplink in the second subframe. In the tenth sigh, the four sub-frames can be a variable number of sub-frames from the second sub-frame. For example, as shown in _ 1G. In another design, the fourth sub-frame can be separated from the sub-frame. A fixed number of sub-frames. The base station may also send a message (eg, rqi_rs request) in the fourth subframe to request the UE to send a reference signal in the fifth subframe (eg, subframe 5) (eg, UL- RQI-RS). The fourth sub-frame can be a variable number of sub-frames from the fifth sub-frame. The fifth subframe receives a plurality of reference signals from a plurality of cards (including the UE). The base station can determine the UE # received signal quality based on the plurality of reference signals. The base station can select the UE based on the received signal quality of the UE. A modulation and coding scheme (MCS)' and may transmit an uplink grant including the selected Mcs. In a further design, the UE may execute program 11 to transmit data on the uplink key. The UE may be in block 1112. An uplink grant is received in the first subframe (eg, subframe 8), and the data may be sent in the second subframe (eg, subframe 12) in block 。4. ue may be in the third subframe (For example, subframe 16) receives ACK/NACK feedback for the data transmitted in the second subframe. ▲ In the design, '彳 to support operations on multiple chopping. In one design' The permission to transmit data on a plurality of carriers is exchanged in block m.2. The data may be exchanged in block 1U4 on the plurality of carriers indicated by the license. Figure 12 illustrates the use of the wireless network. Exchange of information The device 1200 includes: a module 1212 for exchanging control information in the first subframe; and a second subframe according to the control information exchanged in the first subframe a module 1214 for exchanging data, wherein the second sub-frame is a variable number of sub-frames from the first sub-frame; and ack for exchanging data for the exchange in the second sub-frame in the third sub-frame /Nack feedback mode, and 1216, wherein the second sub-frame is a variable number of sub-frames from the second sub-frame. Figure 13 illustrates the design of a program 13 for exchanging data in a wireless network. The program 1 300 can be executed by the UE, the base station/eNB, or some other entity. At least one license for the UE may be exchanged (e.g., sent or received) (block 13 12). The data may then be exchanged in a variable number of subframes indicated by the at least one license (block 1314). In one design of block 1312, the at least one grant may be exchanged in a subframe that is assigned to a base station and has reduced interference from at least one of the interfering base stations. In one design, the base station can be assigned a subset of all available subframes to send control information. The base station can send a grant to the ue that observes high interference in the subframe set, and can avoid sending grants to the UEs in the remaining subframes. Each license can override the data transfer in a single sub-frame or in multiple sub-frames. In a design, such as shown in Figure 9, the base station can perform a procedure to send data to the ue on the downlink. The base station may send at least one downlink grant to the UE in block m2 and may transmit the data to the UE in a variable number of subframes in block 1314. In another design, such as shown in Figure 9, ue may execute program 1300 to receive data from the base station on the downlink. The singer may receive at least one downlink grant in block 1312 and may receive the data in a variable number of subframes in block 1314. In yet another design, such as shown in Figure 1G, the base station can execute routine 1300 to receive data from the uplink on the uplink. The base station may send at least one uplink grant to UE# in block 1312 and may receive data from a variable number of subframes in block 1314. In yet another design, for example, as shown in FIG. 1A, ue can execute a program to send data to the base station on the downlink. Ue may receive at least one uplink grant in block 1312 and may send the data in a variable number of subframes in block 1314. In the design, a plurality of licenses may be sent to ue in block 1312, one permitting the transfer of data in each of the variable number of sub-frames. The plurality of licenses may be sent in a single subframe or in multiple subframes (e.g., each subframe for which a subframe is sent). In the design - each license may include an indication of the subframe to which the license is applied. The indication may be provided explicitly by a field in the license, or implicitly by the resource in which the license is sent or the scrambling code used for the license. In another material, a 41 201132093 single license for data transfer in all variable number of subframes may be sent to the UE in block 1312. Figure 14 illustrates the design of an apparatus i4 for exchanging data in a wireless network. Apparatus 1400 includes: a module 14 丨 2 for exchanging at least one license for the UE; and a module 144 for exchanging data in a variable number of subframes indicated by the at least one license. Figure 15 illustrates the design of a program 15 for exchanging data in a wireless network. The program moo can be executed by the base station/eNB (as described below) or some other entity. The base station can send a message on the pDCCH to request a reduced interference (party # 1512). Thereafter, the base station can exchange (e. g., transmit or receive) data on resources that have reduced interference due to the message transmitted on the PDCCH (block 1514). In a design, such as shown in Figure 7, the base station can execute program 1500 to transmit data on the downlink. For block i5i2, the base port can send a message (e.g., a RUM trigger) on the PDCCH to request reduced interference from at least one of the interfering base stations. For block 1514', the base station can transmit data on the following resources, which have reduced interference from the to the J-interfering base stations due to the message transmitted on the PDCCH. The base station may transmit a downlink grant to the UE on the pDccH, and may send the data to the UE based on the downlink key grant. In another design, for example, as shown in Figure 8, the base station can execute program 1500 to receive data on the uplink. For block i5i2, the base station may send a message (e.g., dl_rum) on the PDCCH to request reduced interference from at least one interfering UE, the at least one interfering 42 201132093 UE communicating with at least one neighboring base station. For block 15 & 4, the base station may receive data from the UE on a resource having reduced interference from the at least one interfering UE due to the message transmitted on the PDCCH. In one design, the base station may send a second message (e.g., an RQI-RS request) on the PDCCH to request the UE to transmit a reference apostrophe (e.g., UL-RQI_rs). The base station may receive a plurality of reference signals from a plurality of UEs including the UE and may estimate based on the reference signals. The receiving number quality of ten UEs. The base station can determine the modulation and coding scheme (MCS) based on the estimated received signal quality of the ue. The base station may generate an uplink grant including the selected MCS, transmit an uplink grant to the UE on the PDCCH, and receive the transmitted data based on the uplink grant. In one design, multi-carrier operation can be supported. In one design, the base station can transmit information on each of the plurality of carriers on the PDCCH. Each message can request a reduced interference on the carrier on which the message is sent. In another design, the base station can transmit a message on a designated carrier of a plurality of carriers on the PDCCH. Each message may request reduced interference on one or more of the plurality of carriers. Figure 16 illustrates the design of a device 16 for exchanging data in a wireless network. Apparatus 1600 includes a module 1612 for transmitting a message on the pDCCH to request reduced interference, and a module 1614 for exchanging data on resources having reduced interference due to the message transmitted on pDccH. Figure 17 illustrates a program for the exchange of data in a wireless network. Program 1700 can be performed by a UE (as described below) or some other entity. The UE may monitor a message sent by at least one base station on pDccH to request reduced interference (block 1712). The UE may exchange (e. g., transmit or receive) data on resources having reduced interference due to the at least one base station transmitting the messages on the PDCCH (block 1714). In one design, such as shown in Figure 7, the UE may execute program 17 to receive data on the downlink. The UE may receive data from the serving base station on resources having reduced interference from at least one neighboring base station. In a design, the UE may receive a first message (e.g., a rum trigger) that is sent by the neighboring base station at PDCCH 1 to request a reduced interference. The UE may send a second message (e.g., UL-RUM) to the serving base station to forward the request for reduced interference from the neighboring base station. In another design, the UE may receive a first message, which is sent by the serving base station on the PDCCH to request reduced interference. The UE may send a second message to the at least one neighboring base station to forward the request for the reduced interference from the serving base station. In one design, the UE is configured to include the serving base station and the at least one adjacent base station. A plurality of base stations receive a plurality of reference signals (a) such as DL Na-RS. The TM can estimate the received signal quality of the serving base station based on the reference signals. The UE may send an RQI, which indicates the received signal quality of the serving base station. In another design, such as shown in Figure 8, the UE may execute program 1700 to transmit data on the uplink. The UE transmits data to the 44 201132093 serving base station on the following resources, the resources having reduced interference from at least one interfering UE communicating with at least _ neighboring base stations. In one type, the UE may receive at least one message (e.g.,) that is transmitted by the at least one neighboring base station on the pDCCH to request reduced interference. The UE may decide whether to transmit data on the resources based on the at least one message received from the at least one neighboring base station. The UE may receive a message (e.g., an RQI_RS request) that the serving base station transmits on the pDCCH to request to transmit a reference signal. The UE may, in response to the at least one message from the at least one neighboring base station and the message from the serving base station, determine a first transmit power level for the resources, the UE may be based on the first transmit power The second transmit power level determined by the level is used to transmit a reference signal (eg, ul_rqi_rs). In one design, 'multi-carrier operation can be supported. In a design, the UE may monitor messages from the at least one base station on each of the plurality of carriers. In another design, the UE may monitor messages from the at least one base station on a private carrier of the plurality of carriers. Figure 18 is a diagram showing the configuration of a device 1 for exchanging data in a wireless network. ten. Apparatus 1800 includes a module i8i2 for monitoring messages sent by at least one base station for requesting reduced interference, and for transmitting the messages on the deduction based on the at least one base Modules for exchanging data on resources with reduced interference "Μ. The modules in Figures 12, 14, 16, and 18 may include processors, electronic devices, hardware devices, and mines; Electronic components, logic circuits, memory, software codes, firmware codes, etc., or any combination thereof. 45 201132093

19 illustrates a block diagram of a design of a base station/eNB 110 and a UE 120, which may be one of the base stations/eNBs in FIG. 1 and one of the UEs in FIG. The base station 11() may be equipped with a plurality of antennas 1934a through 1934t, and the UE 120 may be equipped with R antennas 1952a through 1952r' where substantially τη and RU. At base station 110, transmit processor 192A can receive material from data source 1912 and can receive control information from controller/processor. The control information may include control messages such as RUM triggers, DL_RUM, rqi rs, downlink grants, uplink grants, and the like. The processor 1920 can process (e. g., encode and modulate) the data and control information to obtain data symbols and control symbols, respectively. The processor 192 can also generate reference symbols, for example, for CRS, DL_RQI_RS, and the like. The transmit (D) multiple input multiple rounds (MIM0) processor 1930 can perform spatial processing (example 1 precoding) on data symbols, control symbols, and/or reference symbols (if applicable) and can be directed to T modulators (MODs) 1932a through I932t provide τ output symbol streams. Each modulator 1932 can process a respective round-robin symbol stream (e.g., 〇FDM, etc.) to obtain an output sample stream. Each modulator 1932 can further extract (e.g., convert to analog, amplify, filter, and upconvert) a sample stream to obtain a lower = link signal. A downlink key from the modulator 1932" 19 can be transmitted via T antennas 19 to 19, respectively. At UE 120, antennas 1952a through 1952r can be routed from the base station " and and can receive the received signals: ... demodulator (DEMODs) 19543 through 1954 gamma. Each demodulator 46 201132093 can adjust (eg, wave, amplify, downconvert, and digitize) individual received signals to obtain input samples. Each demodulator 1954 can further process input samples (e.g., WDM · #) for reception

symbol. ΜΙΜΟDetector i956 can send you AJU from all R demodulator 1954a to 19541• Get the received symbol 'If' application, perform ΜΙΜΟ detection on these received symbols, and provide 侦 J 巧 巧. Receive processor 1958 can process (e.g., demodulate and decode) Luber...

The symbol measured by the debt is provided to the data of the decoding data of the UE 120. The price is "60", and the decoded control information is provided to the controller/processor 1 9 8 〇. On the uplink At UE 120, the soot 1 Ω 赞 ^ 射 I Is 1964 can receive data from the data source 1962 and can be set to receive control information from the controller/processor 1980. The control information can be included to include, for example, scheduling requests, Control messages for UL-RUM, RQI, etc. ^ 蛟理益 1964 can process (eg, encode and modulate) the data and control the brakes, and obtain the data symbols and control symbols separately. The processor 1964 also uses, for example, The UL-RQI-RS generates reference symbols. The symbols from the transmit processing process 15 1964 can be precoded by the processor 1966 (if applicable), and further processed by the modulators 1954a through 1954r (eg, J is extended to bC- FDM, OFDM, etc.), and are transmitted to the base station 110 and possibly other base stations. The uplink signal from the UE 120 and other UEs at the base station can be received by the antenna 1934, by the demodulator i932 The detection is detected by the detector 1936 (if applicable), and further processed by the receiving processor 193 8 to obtain the decoded UE 120 and its #ΤΤϋΤΤϋ^^ The processor IMS can provide the left decoded data to the data slot 1939, 47 201132093 and provide the decoded control information to the controller/processor 194Q. The controller/processor 1940 and the controller/processor 198 The operations at the base station 11 and the UE 2 η 瘅άΑ 仏 can be separately guided. The processor side and/or other processors and modules at the base station 110 can execute or guide the program 11GG of FIG. Programs in Figure 丨鸠, Program (4) in Figure 15 and/or other programs of the techniques described herein. The processor mo and/or other processors and modules at the UE 12〇 may execute or direct the program H00H3 in Figure n The program 13A, the program 17 of FIG. 17, and/or other programs 1 of the techniques described herein, and the memory 1982, may store data and code for the base station 110#〇UE 12, respectively.器洲 can schedule UE under Data transmission is performed on the link and/or uplink. Those skilled in the art will appreciate that information and signals may be represented using any of a variety of different techniques and techniques. For example, data that may be referenced above in the full text description The instructions, commands, information, signals, bits, symbols, and chips may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or optical particles, or any combination thereof. The skilled artisan will further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the disclosure herein can be implemented as an electronic hardware, a computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, various illustrative elements, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether this functionality is implemented as hardware or software depends on the specific application and design constraints imposed on the entire system 2. Those skilled in the art can implement the described functionality in varying ways for each particular application, but such implementation decisions should not be considered as a departure from the scope of the present disclosure. The various illustrative logic blocks, modules, and circuits described in connection with the disclosure herein can be utilized with a general purpose processor, digital signal processor (DSP), application specific integrated circuit (ASIC) designed to perform the functions described herein. ), Field Programmable Gate Array (FpGA) or other programmable logic device, individual gate or transistor logic, individual hardware components, or any combination thereof to implement or perform. A general purpose processor may be a microprocessor, but alternatively the processor may be any general processor, controller, microcontroller or state machine. The processor can also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, or a plurality of microprocessors in conjunction with a core, or any other such configuration. - The steps of the method or algorithm described in the disclosure of this document may be implemented directly by hardware, a software module executed by a processor, or a combination of both. The software module can be resident in RAM memory, flash memory, ROM memory, EPR〇M_, eepr〇m memory, scratchpad, hard disk, removable disk '(3)·R〇M or this Any other form of storage medium known in the art. An exemplary storage medium is surfaced to the processor such that the device reads the information and writes the information to the storage medium. The storage medium can be integrated into the processor. Processor and : The storage media can be resident in the hall. The hall can be resident on the user line 2. Alternatively, the processor and storage medium can reside in the user terminal. Dry section 49 201132093 In one or more of the alternative designs, the functions described can be conjugated with hardware, software, firmware or any of them. If the software is implemented right, these functions can be stored or transmitted on computer-readable media. Computer-readable media includes both computer storage media and communication media. The communication media includes the promotion of computers. Any medium that transfers a program from one location to another. The storage medium can be any available media that can be accessed by a general purpose computer or a dedicated computer. For example (but not limited to), such computer readable media can be packaged. # ram, r〇m, PROM CD-R〇m or other CD storage, disk storage or other magnetic storage device, or (4) with or in the form of a command or data structure, and can be used by a general purpose computer Or any other medium accessed by a special purpose computer or a general purpose processor or a dedicated processor. In addition, any connection may be appropriately referred to as a computer readable medium. For example, 'if coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL) or wireless technology (such as 'infrared, radio and microwave') from websites, servers or other remote sources Sending software, such coaxial cable, fiber optic, twisted pair, DSL, or wireless technologies (such as infrared, radio, and microwave) are included in the definition of the media. As used herein, disks and discs (disc) includes compact discs (CDs), laser discs, compact discs, digital versatile discs (DVDs), floppy discs, and Blu-ray discs. Disks usually reproduce data magnetically, while discs are usually used. The laser is used to optically reproduce the data. The above combination should also be included in the scope of computer readable media. The above description of the case is provided to enable any skilled person in the art to implement or use t t 50 201132093 Various modifications to the present invention will be obvious to those skilled in the art, and the general principles defined herein may be applied to other variants without departing from the spirit of the invention. Therefore, the present invention is not intended to be It is limited to the examples and designs described herein, but is to conform to the widest range of nozzles consistent with the principles and new features disclosed herein. [Simplified Schematic] Figure 1 A wireless communication network is shown in Figure 2. Figure 2 illustrates an exemplary frame structure. Figure 3 illustrates two exemplary subframe formats for the downlink. Figure 4 illustrates an example for an upstream wire-to-link link. Sexual frame format. Figure 5 illustrates an exemplary interlace structure. ^ illustrates an exemplary frequency division multiplexing (duplex) partition for the uplink. Shows downlink and uplink light data transmission. Subtraction Figure 9 and Figure 10 do not have interference division on the downlink and uplink respectively. Time-division multiplexing (TDM) for the middle-to-lower link, Figure 11 and Figure 12 respectively. In the case of cross-sub-frame control, the data transfer to the w in FIG. 13 and FIG. 14 is not used to transmit the program and the device for the variable number of sub-frames 15 and the figure. The procedure of the mitigated message and = in PDCCH ± transmission for interference 51 201132093 Figure 17 and Figure 18 respectively illustrate a procedure and apparatus for receiving a message for interference mitigation transmitted on the PDCCH. Figure 19 illustrates a block diagram of a base station and a UE. [Main component symbol description] 100 wireless communication network/wireless network 102a macro cell service area 102b pico cell service area 102c femto cell service area 110 evolved node B (eNB) 110a macro eNB 110b pico eNB 110c femto eNB llOd relay station 120 UE 120b UE 120c UE 120d UE 130 network controller 200 exemplary frame structure 310 subframe format 320 subframe format 400 exemplary subframe format 410a resource block 52 201132093 410b two owe 420a 420b Capital 500 610 control 612 620 control 622 630 630 control 632 capital 700 side 800 side 900 side 1000 side 1100 process 1112 side 1114 side 1116 side 1200 installed 1212 mode 1214 modulo 1216 modulo 1300 process 1312 square source block source block source Block Instance Interlaced Structure Area Area Area Area Area Area Area Case Case Block Block Set Group Block Sequence Block 53 201132093 13 14 Block 1400 Unit 1412 Module 1414 Module 1500 Procedure 15 12 Block 1514 Block 1600 Device 1612 Module 1614 Module 1700 Program 1712 Block 1714 Block 1800 Device 1812 Module 1814 Module 1912 Data Source 1920 Transmit Processor 1930 Transmit (TX) Multiple Input Multiple Output (ΜΙΜΟ) Processor 1932a Modulator (MOD) 1932t Modulator (MOD) 1934a Antenna 1934t Antenna 1936 ΜΙΜΟ Detect 54 201132093 1938 Receiver 1939 Data slot 1940 Controller/processor 1942 Memory 1944 Scheduler 1952a Antenna 1952r Antenna 1954a Demodulator (DEMOD) / Modulator 1954r Demodulator (DEMOD) / Modulator 1956 ΜΙΜΟ ΜΙΜΟ Detector 1958 Receive Processor 1960 Data Slot 1962 Data Source 1964 Transmit Processor 1966 ΤΧ ΜΙΜΟ Processor 1980 Controller/Processor 1982 Memory 55

Claims (1)

201132093 VII. Patent application scope: 1. A method for wireless communication, including the following steps: • exchanging control information in a first sub-frame; and in the first sub-frame The exchanged control information is changed in a second sub-frame by the parent's second sub-frame from the first sub-frame to a variable number of sub-frames. 2. The method of claim 1, further comprising the step of: exchanging a monthly confirmation/negative confirmation for the bedding exchanged in the second sub-frame (ack/nack) in the sub-a third subframe In the feedback, the third frame is a variable number of sub-frames from the second subframe. Basics 3. As requested! Method [wherein the first subframe is assigned to a platform and has reduced interference from at least one interfering base station and wherein the second subframe is available to the base station and the at least - interference Base station. 4. The method of claim 1, further comprising the steps of: determining a set of subframes assigned to a base station to transmit control information and having reduced interference from at least one interfering base station, wherein the one The sub-frame is in the sub-frame. 5. The method of claim 1, further comprising the steps of: 56 201132093 determining at least one interlace assigned to a base station to transmit control information, wherein the subframe in the at least one interlace has a reduced from at least one The interference of the interfering base station' and wherein the first subframe belongs to the at least one interlace assigned to the base station. 6. The method of claim 1, wherein the step of exchanging control information comprises the steps of: transmitting a downlink grant in the first subframe, and wherein the step of exchanging data comprises the step of: Send data in the sub-frame. The method of exchanging water items 1 wherein the step of exchanging control information comprises the steps of: receiving a downlink license in the first subframe, and wherein the step of exchanging data comprises the following steps: The second sub-frame receives the data. 8. The method of claim 1, wherein the step of exchanging control information comprises the steps of: transmitting an uplink grant in the first subframe, and wherein the step of exchanging data comprises the step of: The method of receiving the data item 1 in the subframe, wherein the step of exchanging the control information comprises: performing an initial step of: receiving an uplink grant in the first subframe, and wherein the step of exchanging data comprises the following steps : Send the information in the first. In the method of claim 1, the method of claim 1, further comprising the steps of: sending a message in the sub-frame to request interference reduced on the downlink in the second subframe, the third sub-signal The frame is a variable number of sub-frames from the second sub-frame. Shi. The method of claim 10, further comprising the steps of: transmitting a reference signal in a fourth subframe, the fourth subframe being a variable number of subframes from the second subframe. α, as in the method of claim i, further comprising the steps of: transmitting a message in the third subframe to request a reduced interference on the subscribed link in the second subframe, the third subframe A variable number of sub-frames from the second sub-frame. The method of the monthly claim 1 further includes the following steps: = one = two sub-frame transmission - message to request - user equipment (10) four sub-frames send a reference signal, the third sub-frame is from the four sub-frames The frame is a variable number of sub-frames. The method of claim 13, further comprising the steps of: receiving a plurality of reference signals from a plurality of user equipments (UEs) including the UE in a fourth sub-frame of Sx; and based on the plurality of reference signals The received signal quality of the UE is determined. 58 201132093 15. The method of clearing the item] The following steps: exchanging the information for the exchange of control information for the flag I, including the 传中中, the data transmission on the nine carriers-permission, the eight-in-a-family exchange information The steps include the following steps: exchanging the .f material on the plurality of carriers shown. The device for wireless communication referred to in the license includes: means for exchanging control information in the -th subframe, and for using the first sub-based on the re-sequence v_^. The component of the exchange data in the control box r frame exchanged in the frame, the second sub-frame distance: the first sub-:: a variable number of sub-frames. 17_ The device of claim 16, further comprising: ; in the second subframe, the parent replaces the member of the positive acknowledgment/negative acknowledgment (ACK/NACK) feedback for the material exchanged in the second subframe The second sub-frame is a variable number of sub-frames from the second sub-frame. 18. The apparatus of claim 16 further comprising: means for transmitting a message in a third subframe to request interference reduced on the downlink in the second subframe, the third subframe The frame is from the second subframe - a variable number of subframes. 19. The apparatus of claim 18, further comprising: means for transmitting a reference signal in the fourth subframe, wherein the fourth sub-key 59 201132093 is a variable number of sub-messages from the third sub-frame frame. 20_ The apparatus of claim 16, further comprising: means for transmitting a message in the third subframe to request interference reduced on the uplink in the second subframe, the third sub The frame is a variable number of sub-frames from the second sub-frame. 21. An apparatus for wireless communication, comprising: at least one processor configured to: exchange control-bein in a first subframe, and based on the exchange in the first subframe The control information exchanges data in a second subframe, and the second subframe is a variable number of subframes from the first subframe. 22. The device of claim 21, wherein the at least one processor is configured to exchange a positive acknowledgment/negative acknowledgment (ACK/NACK) for the material exchanged in the second subframe in a second subframe In response, the third sub-frame is a variable number of sub-frames from the second sub-frame. 23. The apparatus of claim 21, wherein the at least one processor is configured to send a message in a second subframe to request interference reduced on the downlink key in the second subframe The third sub-frame is a variable number of sub-frames from the second sub-frame. 4. The device of claim 23, wherein the at least one processor is configured as 60 201132093 to transmit a reference signal in a fourth subframe, the fourth subframe is variable from the third subframe The apparatus of claim 21, wherein the at least one processor is configured to send a message in a third subframe to request a lowering on the uplink in the second subframe The third sub-frame is a variable number of sub-frames from the second sub-frame. 26. A computer program product comprising: a computer readable medium 'The computer readable medium includes: And causing at least one computer to exchange control code information in a first subframe, and for causing the at least one computer to exchange the control information exchanged in the first subframe in a second subframe The code of the data, the second sub-frame is a variable number of sub-frames from the first sub-frame. The method for wireless communication includes the following steps: exchanging at least one for user equipment (UE) Licensing; and at least "δΓ ώί· - ° inch" is not a variable number of sub-frames to exchange data. 28. As requested in item 27, + ^ < Wanfa' where the exchange of at least one license step includes The following steps: • The knife is assigned to a base station and has a reduced interference from at least one of the interfering bases & the port exchanges the at least one 2011 20113093 license. 29. The method of claim 28, wherein The base station is assigned a set of subframes in all available subframes to transmit control information, and wherein the base station transmits a grant to the UE that observes high interference in the subframe group, and does not in the remaining subframes. The method of claim 27, wherein the step of exchanging at least one grant further comprises the step of: transmitting at least one downlink grant to the UE, and wherein the exchange of data The step includes the steps of: transmitting data to the UE in the variable number of subframes. 31. The method of claim 27, wherein the step of exchanging at least one license includes The following steps: receiving at least one downlink grant at the UE, and wherein the step of exchanging data includes the step of: receiving data in the variable number of subframes at the ue.: Method of requesting item 27. The step of exchanging at least one grant comprises the steps of: transmitting at least one uplink grant to the UE, and wherein the step of exchanging data comprises the step of receiving from the UE in the variable number of frames 33. The method of claim 27, comprising the steps of: receiving at least one uplink grant at a step of the UE in which the at least one license is exchanged, 62 201132093 and wherein the exchange subframe includes the following Step: Send data from the UE at the variable number Y. 3. The request item 2 7 includes the following steps: the variable number of methods, wherein the exchanging at least one license step sends a plurality of licenses to the UE, and one license transmits data for each of the frames . 3 5 · If the method of request 3 4 is sent in the message box. Wherein the plurality of licenses are provided in an individual sub-frame 36. An indication of a sub-frame for use in the method of claim 34, or provided by the grant scrambling frequency code. Each of the licenses includes a license for the license, and a resource for the license is provided by a field in the license or a method for the license. The money is at least a licensed step, the next step is to send a single license for all of the variable number of subframes. 3 8 - a device for wireless communication, comprising: - for at least one licensed component of the parent-to-user equipment (UE); and ^; one of the licenses indicated by the license A component that exchanges data in a number of sub-frames. 63 201132093 Take the device of 8th, which is used to exchange at least one licensed piece = and! The means for exchanging data at the UE receiving at least one downlink grant includes means for receiving data in the variable number of subframes. The apparatus of the second item 38, wherein the means for exchanging at least one of the licenses comprises: a configuration for receiving at least one uplink grant at the UE, the means for exchanging data includes A means for transmitting data from the UE in the variable number of subframes. The means of claim 38 wherein the means for exchanging at least one of the licenses comprises means for transmitting a plurality of grants to the UE, and a license + data transfer in each of the variable number of sub-frames. The apparatus of 38, wherein the means for exchanging at least one license = transmitting a component of a soap permit for all of the variable number of subframes. An apparatus for wireless communication, comprising: = a processor configured to: exchange at least one license for a user's inventory variable number; and in a number of subframes indicated by the at least one license Exchange information. 64 201132093 44. A computer program product comprising: a computer readable medium, the computer readable medium comprising: at least one license code for causing at least one computer parent to change to a user equipment (UE), And - a code for causing the at least one computer to exchange data in a variable number of subframes indicated by the at least one license. 45. A method for wireless communication, comprising the steps of: transmitting a message on a physical downlink control channel (PDCCH) to request reduced interference; and exchanging data on resources 'the resources are attributed to The message transmitted on the PDCCH has reduced interference. 46. The method of claim 45, wherein the step of transmitting the message comprises the step of transmitting, by the base station, the message on the PDCCH to request reduced interference from the at least one interfering base station, and wherein the exchange The step of data includes the steps of: transmitting data to a user equipment (UE) on the t-sources, the resources having reduced information from the at least one interfering base due to the transmitting the information on the PDCCH • Interference from the station. 47. The method of claim 46, further comprising the step of: transmitting a downlink grant to the UE on the PDCCH, wherein the data is transmitted to the UE based on the downlink grant. 65 201132093 The method of claim 45, wherein the step of transmitting the message comprises the step of: transmitting, by the base station, the message on the Xiao PDCCH to request a reduced interference from at least one interfering user equipment (ue), The at least one interfering UE is in communication with the at least one neighboring base station, and wherein the step of replacing the data comprises the step of: receiving data from the UE on the resources, the source of the material f is attributed to being sent on the pdcch The message has a reduced interference from the at least one interfering UE. 49. The method of claim 48, further comprising the step of: transmitting an uplink grant to the UE# on the PDCCH, wherein the data is transmitted by the UE based on the uplink grant. 50. The method of claim 45, further comprising the steps of: transmitting a second message on the PDCCH to request a user equipment (UE) to transmit a reference signal; and receiving a plurality of UEs from the plurality of UEs including the UE a reference signal; estimating a received signal quality of the UE based on the plurality of reference signals; and determining a modulation and coding scheme for the data exchanged on the resources based on the estimated received signal quality of the UE. 51. The method of claim 45, further comprising the step of: transmitting a message on each of the plurality of carriers on the PDCCH, each message requesting reduced interference on a carrier on which the message is transmitted. 66. The method of claim 45, further comprising the steps of: transmitting a message on a designated one of the plurality of carriers on the PDCCH, each message requesting a decrease in one or more of the plurality of carriers Interference. 53_A device for wireless communication, comprising: means for transmitting a message on a physical downlink control channel (PDCCH) to request reduced interference; and means for exchanging data on a resource, such The resource has reduced interference due to the message sent on the PDCCH. 5. The apparatus of claim 53, wherein the means for transmitting the message comprises means for transmitting, by the base station, the message on the PDCCH to request a reduction of interference from an interfering base station to the evening. And wherein the means for exchanging f material & includes means for transmitting material to a user equipment (UE) on the material (four), the resources having a reduced value due to the message transmitted thereon Interference from the at least one interfering base station. The device of the whistle item 53, wherein the component for transmitting the message is used; the component is sent by the base port on the pDCCH to request a reduced interference from at least one interfering user equipment (UE), The at least one interfering UE is in communication with at least one neighboring base station, and 67 201132093 wherein the means for exchanging data includes means for receiving data from the UE on the resource, etc., the resources are attributed to The sfL information transmitted on the Pdcch has reduced interference from the at least one interfering UE. 56. The apparatus of claim 53, further comprising: means for transmitting a second message on the PDCCH to request a user equipment (UE) to transmit a reference signal; for receiving from a plurality of UEs including the UE a component of a plurality of reference signals; means for estimating a received signal quality of the UE based on the plurality of reference signals; and for determining to exchange on the resources based on the estimated received signal quality of the UE A component of the modulation and coding scheme of the material. 57. An apparatus for wireless communication, comprising: at least one processor configured to transmit a message on a physical downlink control channel (PDCCH) to request reduced interference; and to exchange data on a resource 'The resources have reduced interference due to the message sent on the PDCCH. 5 8 - A computer program product comprising: a computer readable medium, the computer readable medium comprising: for causing at least one computer to send a message on a physical downlink control channel 68 201132093 (PDCCH) a code requesting reduced interference; and a code for causing the at least one computer to exchange data on the resource, the resources having reduced interference due to the message transmitted on the PDCCH. 59. A method for wireless communication, comprising the steps of: monitoring messages sent by at least one base station on a physical downlink control channel (PDCCH) to request reduced interference; and at > source The upper parent exchanges data that the resources have reduced interference due to the messages sent by the at least one base station on the PDCCH. 60. The method of claim 59 wherein the step of exchanging data comprises the step of receiving data from a serving base station on the resources, the resources having reduced interference from at least one neighboring base station. 61. The method of claim 60, further comprising the steps of: receiving a first message 'The first message is sent by a neighboring base station on the PDCCH to request reduced interference; and transmitting a first message to the serving base station Two messages to forward the request for reduced interference from the neighboring base station. 62. The method of claim 6, further comprising the steps of: receiving a first message sent by the serving base station on the PDCCH to request reduced interference; and to the at least one neighboring base station A second message is sent to forward the request for reduced interference from the 69 201132093 serving base station. The method of claim 59, further comprising the steps of: receiving a plurality of reference signals from a plurality of base stations including a serving base station and at least one neighboring base station; estimating the serving base station based on the plurality of reference signals Received signal quality; and; a Transmit Resource Quality Indicator (RQI) 'The resource quality indicator indicates the received signal quality of the serving base station. 64. The method of claim 59, wherein the step of exchanging data comprises the step of flying: transmitting data to the service base station on the resources, the thirst having reduced at least one interfering user equipment (called The at least one interfering TM communicates with at least one adjacent base station. 65. The method of claim 59, further comprising the steps of: receiving at least one message 'the at least one message is by at least one neighbor The base station transmits on the PDCCH to request reduced interference; the receiving-serving base station transmits a message on the PDCCH to request to transmit a signal; and the at least one message from the at least one neighboring base station comes from the service The base station's message determines a level of transmit power for the resources; and transmits a reference 66 based on the second transmit work 70 201132093 signal determined based on the first transmit power level. Receiving at least the method, further comprising the steps of: transmitting at least one of the neighboring base stations on the PDCCH to request the reduced interference A is based on the at least one message received from the neighboring base station to the beta base station to send data on the resources. 67. The method of claim 59, wherein the step of monitoring the message comprises the following base Each of the plurality of carriers monitors a message from the at least one station. 68. The method of claim 59, wherein the step of monitoring the message comprises monitoring on the carrier from the at least one base Among the plurality of carriers, the information refers to the ground station. 69. A device for wireless communication, including a component for monitoring a message, the message from + s I ^ re-drying, etc. by at least one base station a physical downlink control channel (pDcrH, CCH) transmitting to request reduced interference; and means for exchanging data on the resource, the resources being attributed to the at least _ base station transmitting on the PDCCH The message has a reduced amount of 71 201132093. The apparatus of claim 69, further comprising: means for receiving a first message, the first message consisting of A neighboring base station transmits on the PDCCH to request reduced interference; and means for transmitting a second message to a serving base station to forward the request for reduced interference from the neighboring base station. The apparatus of claim 69, further comprising: means for receiving at least one message, the at least one message is sent by the at least one neighboring base station on the PDCCH to request reduced interference; for receiving a serving base station a means for transmitting a message requesting to transmit a reference signal on the PDCCH; for responding to the at least one message from the at least one neighboring base station and the message from the serving base station, deciding for the resources a first transmit power level component; and means for transmitting a reference signal at a first transmit power level determined based on the f-transmit power level. 72. Apparatus for wireless communication, comprising: at least one processor configured to m messages, the messages being sent by at least one base station on a physical downlink control channel (pdcch) to request a decrease Interference; and exchange of information on resources, such as Xiao and other resources due to the at least one base station transmitting the message on the PDCCH 72 201132093 has reduced interference. 73. A computer program product comprising: a computer readable medium 'The computer readable medium comprises: information for causing at least one computer to monitor the generation of messages, stomach, etc. by at least one base station in an entity Transmitting the reduced interference on the downlink control channel (pDCCH); and a code for causing the at least one computer to exchange data on the resource, the sources being due to the at least one base station transmitting on the PDCCH Interesting and reduced interference. 73